- Author: Leonard Sax
- Language: English
- Year: 2015
- Author: J. D. Mollon Joel Pokorny Ken Knoblauch
- Language: English
- Year: 2003
- Author: Sarah Blaffer Hrdy
- Language: English
- Year: 2009
- Author: Jerome Kagan
- Language: English
- Year: 2013
- Author: Stephen Hupp Jeremy Jewell
- Language: English
- Year: 2015
- Author: Bernice Sorensen
- Language: English
- Year: 2008
- Author: Joseph Nowinski
- Language: English
- Year: 2010
- Author: Marc Marschark Peter C. Hauser
- Language: English
- Year: 2011
- Author: Jean Piaget, Bärbel Inhelder
- Language: French
- Year: 1973